Building on Lee's post about how Sanders might have done in a general election against Trump, I recently conducted a national survey of Americans over 30, whom I have been tracking for 12 years. Ninety-two percent of respondents would have stuck with the same party regardless of the Democrats' nominee, but 4 percent who were with Biden then said "neither" when asked to choose between Trump and Sanders -- and another 1 percent backed Biden and then Trump. By contrast, just 1 percent backed Sanders but not Biden. So Biden does seem to hold onto a sliver of voters who said they wouldn't back Sanders.